needing a new rear end and advice

An 8 1/4 rear would probably be the easiest to find. (I think.) You don't need the extra strength of an 8 3/4" with a mild combo, but it wouldn't be bad to get if you find a deal. Anything out of a '72 or older a-body would be an easy swap and same width.

You will need the proper length driveshaft with the proper slip yoke for your trans and correct size u-joint (probably the small 7260) for the rear end pinion yoke. Different rears will need different length driveshafts. Not sure if there are 2 that may be the same.)

Best bet would be to find a junkyard V-8 Scamp, Valiant or Swinger with the same trans as yours and get the rear and driveshaft together. I believe all 3 have a 111" wheelbase.

Dusters, Dart Sports and Demons have a shorter 108" wheelbase so the driveshaft length is different.

http://www.rasoenterprises.com/index.php/mopar/69-general/128-bodies?start=1

Chart shows •1967-1973 Plymouth Valiant as having a 108" wheelbase, which surprised me. Can anybody confirm that or is it a typo? (I'll do a search.)

In 1973, front disc brake cars had the bigger 4.5" bolt patterns, so you'd need different rear wheels. But many drum brake cars still retained the 4" bolt pattern.

Did I miss anything??? :scratch: